Posted by mikespikedI usually make almost 100% VG juices... the only PG is the flavorings... but I've had a hard time using the calculator when trying to do this. (see the attatched picture) If I input 100% VG for nic base and 100% PG for flavoring, it will still ask me to put in PG to the mix, and if I dont I get an error. I could just be doing something wrong though. Any help would be much appreciated.

The calculations are correct. A neg PG amount was generated because of the added total of 15% PG in your 2 flavoring.Put 17.5% PG in the PG result as shown in the Pix below. This is the TRUE result due to the PG in the flavoring.

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Posted by RandyrtxSee below... getting a similar problem with a 100% PG mix using 5% water. Where's the VG coming from?

Because you are adding 5% in the Water/Vodka/PGA box. 5% is equally deducted from PG (2.5%) and VG (2.5%) Result equally. It's the VG 2.5% that's giving the neg result.

I am new to DIY and getting ready to buy my supplies. I have a simular problem and hope you can help. I am trying to do a 100% VG blend. I'm using 100% VG, 100 VG Flavor, Distilled Water, and My Nic is 100% VG. My question is why do I have to have PG in my target to get everything to work out right on the calc. Thanks in advance for your help.

I am new to DIY and getting ready to buy my supplies. I have a simular problem and hope you can help. I am trying to do a 100% VG blend. I'm using 100% VG, 100 VG Flavor, Distilled Water, and My Nic is 100% VG. My question is why do I have to have PG in my target to get everything to work out right on the calc. Thanks in advance for your help.

Using 10% water will split the difference for PG and VG deducting 5% PG and 5% VG.Putting 5% as your Target PG like you did will ensure a final all VG result.

Sorry to post this here, but I've only just activated my account, and cannot seem to post a new topic yet.I have a similar issue when using the 'no PG/VG' tick-box in the calculator, and trying to make %100 VG juice.

When using ethyl alcohol based flavourings, obviously I won't get true %100 VG juice, but the calculator is still outputting a negative amount of PG in the final.The only way around I've found is, if for example using 5% flavour, is to calculate the final percentages as 2.5%PG/97.5%VG- which then displays '0ml' for the PG to add. I have no extra water/vodka calculated into the mix- so what maths-magic/workaround can I use to ensure I am getting 30ml of '%100 VG juice', aside from the 1.5ml of ethyl alcohol based flavouring in it?

I just want to ensure accuracy and safety in my mixes, and would like to understand completely what the calculator is outputting for me.Thanks!

I'm using essential oils that I don't think have any PG. I'm not sure but I don't think they use a liquid carrier of any sort. No matter how I adjust the PG in the calc I just can't get it to balance.

You are starting with Nic at 50/50 PG ratio and trying to make it 100% VG.By adding 15% water, half (7%) is added to PG and the other 7% is added to the VG final ratio.The same thing applies by checking the boxes "Zero PG/VG" in the flavor lines. Half of the flavoring percentage is equally divided and added to the PG/VG ratio.Your final Target PG/VG ratio needs to be adjusted. The highest VG ratio will be 85.65% with what you are using.

Another new user here. I'd like to see a "Check Box" by the preferred PG/VG ratio so as to basically turn it off. When mixing small test batches, one drop of a flavor enhancer can change ALL the ratios! It's a little tough to go less than one drop. I would like to be able to input my desired PG/VG ratio, check that box, then have it adjust according to what I am actually putting in the mix. Then I can see how close I am to my targeted ratio. I was mixing up a batch with 1 main flavor and then minute amounts of Sweet and Sour. Those enhancers were also PG based so I went over and I got the dreaded Negative PG numbers. In order to get that PG out of the negative and close to zero, I had to go tinker around with the preferred ratio numbers, inputting decimals here and there - which got me "Exception Errors", but just clicked continue and it kept working...- until finally I got a near zero positive PG add. I'd rather have it work the other way. Tell me that I am going over or under a desired ratio, but let me decide if that is OK.

Welcome to the forum APRock.I hear your concerns. I will consider your suggestion.

In the meantime, If you get a negative PG, deduct the PG total % number from the Target VG %.Example: The PG result shows "-2.5%" and your Target VG is 50%. Subtract 2.5% from 50%. Make the target VG 47.5%.